The students of Kaimei High are going on a class trip, but first, they have to participate in a rope skipping competition to see which class gets the best rooms. Saaya doesn't have an athletic bone in her body, so is worried she's going to doom her class to the worst rooms of all, until the Sket-dan tries teaching her how to skip! Then, the students are on their way, but in the back of one bus, Chuu-sensei is playing mad scientist again, and this time his victims are Bossun, Himeko, and Tsubaki!
Our aim is 100 times! Even if your 
legs fall off, keep skippin'!
¡Vamos a por 100! ¡Incluso si se nos caen
 las piernas, seguimos saltando!
Nosso objetivo é 100 pulos! Mesmo que
 suas pernas caiam, continuem pulando!